Rate Control Upgrade & Auto CPU Scaling

makefile

@@ -189,7 +189,7 @@ system:
 				set -e; \
 			fi; \
 			for elf in "$$pak_dir/build/$(PLATFORM)/"*.elf; do \
-				[ -f "$$elf" ] && rsync -a "$$elf" "$$output_dir/" || true; \
+				[ -f "$$elf" ] && mkdir -p "$$output_dir/bin" && rsync -a "$$elf" "$$output_dir/bin/" || true; \
 			done; \
 		fi; \
 	done; true

makefile.qa

@@ -188,7 +188,7 @@ TEST_INCLUDES = -I tests/support -I tests/support/unity -I workspace/all/common
 TEST_UNITY = tests/support/unity/unity.c
 
 # All test executables (built from tests/unit/ and tests/integration/)
-TEST_EXECUTABLES = tests/utils_test tests/nointro_parser_test tests/pad_test tests/collections_test tests/gfx_text_test tests/audio_resampler_test tests/minarch_paths_test tests/minui_utils_test tests/m3u_parser_test tests/minui_file_utils_test tests/map_parser_test tests/collection_parser_test tests/recent_parser_test tests/recent_writer_test tests/directory_utils_test tests/binary_file_utils_test tests/ui_layout_test tests/str_compare_test tests/integration_workflows_test
+TEST_EXECUTABLES = tests/utils_test tests/nointro_parser_test tests/pad_test tests/collections_test tests/gfx_text_test tests/audio_resampler_test tests/minarch_paths_test tests/minui_utils_test tests/m3u_parser_test tests/minui_file_utils_test tests/map_parser_test tests/collection_parser_test tests/recent_parser_test tests/recent_writer_test tests/directory_utils_test tests/binary_file_utils_test tests/ui_layout_test tests/str_compare_test tests/rate_meter_test tests/integration_workflows_test
 
 # Default targets: use Docker for consistency
 test: docker-test
@@ -298,6 +298,11 @@ tests/str_compare_test: tests/unit/all/common/test_str_compare.c workspace/all/c
 	@echo "Building string comparison tests..."
 	@$(CC) -o $@ $^ $(TEST_INCLUDES) $(TEST_CFLAGS)
 
+# Build rate meter tests (audio/display rate measurement)
+tests/rate_meter_test: tests/unit/all/common/test_rate_meter.c workspace/all/common/rate_meter.c $(TEST_UNITY)
+	@echo "Building rate meter tests..."
+	@$(CC) -o $@ $^ $(TEST_INCLUDES) $(TEST_CFLAGS)
+
 # Build integration tests (tests multiple components working together with real file I/O)
 tests/integration_workflows_test: tests/integration/test_workflows.c \
 	tests/integration/integration_support.c \